1 The body produces too much cortisol hormone by itself (known as âendogenousâ Cushingâs syndrome).  A person takes large amounts of steroid medication to treat conditions such as asthma, rheumatoid arthritis or eczema. This is known as âexogenousâ Cushingâs syndrome.
Deficiency. A shortage or insufficiency. The amount by which federal Income Tax due exceeds the amount reported by the taxpayer on his or her return; also, the amount owed by a taxpayer who has not filed a return.
deficiency disease a condition due to dietary or metabolic deficiency, including all diseases caused by an insufficient supply of essential nutrients. iron deficiency deficiency of iron in the system, as from blood loss, low dietary iron, or a disease condition that inhibits iron uptake. See iron and iron deficiency anemia.